Ryan Engstrom

Ryan Engstrom

Faculty:
Associate
Office:
Room 214
Address: Old Main
1922 F Street, NW
Washington, DC, 20052
Email:
rengstro@gwu.edu

Areas of Expertise

Remote Sensing
GIS
Climate Change
Arctic Environments
Population Estimates

Background

Education

Ph.D. (San Diego State - UC Santa Barbara)

Publications

Mathison, D., Chamberlain, J., Cowan, N., Engstrom, R., Fu, L., Shoo, A., and Teach, S. (2013) Association of Primary Care Spatial Density with Non-Urgent Visits to a Pediatric Emergency Department Academic Pediatrics 13 (3):278-285 DOI: 10.1016/j.acap.2013.02.006

Engstrom, R., Ofiesh, C., Rain, D., Jewell, H., and Weeks, J. (2013) Defining Neighborhood Boundaries for Urban Health Research in Developing Countries: A Case Study of Accra, Ghana Journal of Maps DOI:10.1080/17445647.2013.765366

Azar,D., Engstrom, R., Graesser, J. and Comenetz, J. (2013) Generation of fine-scale population layers using multi-resolution satellite imagery and geospatial data Remote Sensing of Environment 130 219-232. DOI: 10.1016/j.rse.2012.11.022

Weeks, J., Getis, A., Stow, D., Hill, A., Rain, D., Engstrom, R., Stoler, J., Lippitt, C., Jankowska, M., Lopez, A.C., Coulter, L, and Ofiesh, C., Connecting the Dots between Health, Poverty, and Place in Accra, Ghana (2012) Annals of the Association of American Geographers DOI: 10.1080/00045608.2012.671132

Liljedahl, A., Hinzman, L., Harazano, Y., Zona, D., Tweedie, C., Hollister, R., Engstrom, R. and Oechel, W.C., (2011) Nonlinear controls on evapotranspiration in Arctic coastal wetlands. Biogeosciences 8, 3375-3389. doi:10.5194/bgd-8-6307-2011

Jankowska, M., Weeks, J., and Engstrom, R. (2011)Do the Most Vulnerable People Live in the Worst Slums? A Spatial Analysis of Accra Ghana. Annals of GIS 17:4, 221-235. DOI:10.1080/19475683.2011.625976

Engstrom, R. and Hope, A.S. Parameter Sensitivity of the Arctic BIOME BGC Model for Estimating Evapotranspiration in the Arctic Coastal Plain (2011) Arctic, Antarctic, and Alpine Research 43(3):380-388 DOI: 10.1657/1938-4246-43.3.380.

Rain, D., Engstrom, R., Ludlow C., and Antos, S. (2011). Accra Ghana: A City Vulnerable to Flooding and Drought-Induced Migration, in Global Report on Human Settlements 2011: Human Settlements Background Study for Chapter 4: UN Publications. http://www.unhabitat.org/downloads/docs/GRHS2011/GRHS2011CaseStudyChapter04Accra.pdf

Azar, D., Graesser, J., Engstrom, R., Comenetz, J., Leddy, R., Schechtman, and Andrews, T. (2010) Spatial Refinement of census population distribution using remotely sensed estimates of impervious surface in Haiti. International Journal of Remote Sensing. 31: 21, 5635-5655 DOI: 10.1080/01431161.2010.496799.

Fu, L., Cowan, N., McLaren, R., Engstrom, R, and Teach, S. (2009) Is spatial accessibility to primary care providers associated with vaccination coverage among children with Medicaid insurance? Pediatrics 124(6) pp. 1579-1586; DOI: 10.1542/peds.2009-0233.

Engstrom, R.N., Hope, A.S., Kwon, H. and Stow, D. (2008) The Relationship between Soil Moisture and NDVI near Barrow, Alaska, Physical Geography. 29(1), pp. 38-53; DOI: 10.2747/0272-3646.29.1.38.

Stow, D., Peterson, A., Hope, A., Engstrom. R. and Coulter L. (2007) Greenness Trends of Arctic Tundra Vegetation in the 1990s: Comparison of Two Normalized Difference Vegetation Index Data Sets from NOAA Advanced Very High Resolution Radiometer Systems International Journal of Remote Sensing. Vol. 28 Issue 21, p4807-4822, 16p; DOI: 10.1080/01431160701264284; (AN 27217146).

Sitch, S., McGuire, A. D., Kimball, J., Gedney, N., Gamon, J., Engstrom, R.N., Wolf, A., Zhuang, Q. and Clein, J. (2007) Assessing the circumpolar carbon balance of arctic tundra with remote sensing and process-based modeling approaches. Ecological Applications. 17(1), pp. 213–234

Engstrom, R., Hope, A.S., Kwon, H., Harazano, Y., Oechel, W.C., and Mano, M (2006)

Modeling evaporation in Arctic coastal plain ecosystems using a modified version of BIOME BGC. Journal of Geophysical Research Biogeosciences- 111, G02021, doi:10.1029/2005JG000102

Engstrom, R. N., Hope, A.S., Kwon, H., Stow, D.A. and Zamolodchikov, D. (2005) Spatial distribution of near surface soil moisture and its relationship to microtopography in the Arctic coastal plain. Nordic Hydrology, 36 (3): 219-234.

Hope, A.S., Engstrom, R., and Stow, D.A. (2005) Relationship between AVHRR surface temperature and NDVI in Arctic Tundra Ecosystems. International Journal of Remote Sensing, 26:8, p. 1771-1776.

Vourlitis, G.L., Verfaille, J., Oechel, W.C., Hope, A.S., Stow, D.A. and Engstrom, R. (2003) Spatial variation in regional CO2 exchange for the Kuparuk river basin, Alaska over the summer growing season. Global Change Biology 9, p. 930-941.

Engstrom, R. N., Hope, A. S., Stow, D.A., Vourlitis, G. L., and Oechel, W. C. (2002) Co-variability of the Priestley-Taylor alpha coefficient and regional NDVI in Arctic landscapes, Journal of the American Water Resources Association (JAWRA), 38:6, p. 1647-1659.

Classes Taught

GEOG 002 - Physical Geography 
GEOG 106 - Intermediate GIS
GEOG 107 - Introductory Remote Sensing
GEOG 136 - Water Resources
GEOG 196 - Field Methods in Geography
GEOG 221 - Geospatial Techniques